ruger pc carbine

Hey all,
I've recently acquired the Ruger PC carbine free float chasis model. It does not come with iron sights installed and does not have a picatinny rail that runs the whole length of the hand guard. There are clear images of it here Ruger Announces the New Pistol Caliber Carbine Chassis...

Hey I was wondering if anyone knew how I could get either the 10.5 or 16 inch barrel for the PC by itself. I’m in the market for a PCC and the Ruger stands out to me. TheFireArmsGuy on Youtube did a video of him swapping out the barrels and it worked. For what I know, Ruger won’t sell a...